Combined check-valve and stop-cock.



No. 656,!46. Patented Aug. -|4, i900. H. m. PINNEY. COMBINED CHECK VALVE AND STOP CUCK.

(Application filed Jan. 27, 1900.

(No Model.)

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By Z7 Z6 JEI-Horgcys,

HIRAM M. PINNEY, OF ALMA, NEW YORK, ASSIGNOR OF ONE-HALF TO GOTTLIEB F. VOSLER AND MARTIN F. YOSLER, OF SAME PLACE.

COMBINED CHECK-VALVE AND STOP-COCK.

SPECIFICATION forming part of Letters Patent No. 656,146, dated August 14, 1900.

Application filed January 27, 1900. Serial No. 3.011. (N0 model.)

To aZl whom it may concern.-

Be itknown that I, HIRAM M. PINNEY, a citizen of the United States, residing at Alma, in the county of Allegany and State of New York, have invented a new and useful Combined Check-Valve and Stop-Cock, of which the following is a specification.

This invention relates to check-valves for steam-boilers of various kinds, and has for one object to provide certain new and useful improvements whereby a single valve may serve the double purpose of a check-valve and a stopcock. It is furthermore designed to provide improved means for conveniently assembling the parts of the valve, so as to facilitate thereplacing of the valve-'seatwhen the latter has become worn or broken and without removing the entire valve, and also'to provide for effectually draining the valve-oasin g when the stop-cock is closed.

A further object resides in the provision of improved means for entirely closing the stopcock, so that the latter cannot be accidentally or otherwise opened bya turning of the plug in the usual manner.

With these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings,and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantages of the invention. 7

In the drawings, Figure 1 is 'a sectional elevation of a combined check-valve and stopcock constructed in accordance with the present invention. Fig. 2 is a transverse sectional view taken on the line a: cc of Fig. 1.

Fig. 3 is a central longitudinal sectional view taken at right angles to Fig. 1 and showing the stop-cock in closed position. Fig. 4 is a detail perspective View of the turning plug. Fig. '5 is a detail perspective view of the removable valve-seat.

Corresponding parts in the several figures of the drawings are designated by like char-' valve-casing, which is open at opposite ends and also provided with the usual diametrically-opposite inlet and outlet. branches 2 and 3, respectively, which are located adjacent to the respective ends of the casing and communicate with the interior thereof through the openings or waterways 4t and 5, respectively, which are formed through the adjacent walls of the casing. Located within this casing and extending throughout the entire length thereof is a hollow tapered turning plug 6, which is designed to fit snugly the similarly-tapered interior walls of the casing. This turning plug is provided with the diametrically-opposite inlet and outlet openings 7 and 8, respectively, which are designed to be alined with the respective inlet and outlet waterways, soas to furnish an unobstructed passage through the hollow turning plug. One end of the plug is open and the opposite end is closed and also provided with an angular head 9 for the reception of a wrench when it is desired to turn the plug, or the latter may be provided with any suitable handle for accomplishing the same purpose. Ad= jacent to the inner end of the angular wrenchhead 9 the plug is provided with exterior screw-threads 10,'which are designed to receive a nut 11, that forms an annular collar or stop-should er for engagement with the adjacent flanged end of the casing. Suitable washers 12 may be interposed between the nut and the casing, so as to form a tight joint t-herebetween and also to take up wear.

The valve-seat 13 is in the form of a tube or hollow cylinder, which is provided with one or more lateral openings 14, one of which is designed to be alined with the adjacent inletwaterway 7 in the turning plug. The inner end of this tubular valve-seat is open,while its opposite outer end is closed, and the entire valve is to be inserted longitudinally into the bore of the hollow turning plug through the open end thereof. The inner marginal edge of the open end of the valve-tube is beveled inwardly to form the valve-seat proper, 15, which is to support a ball-valve l6.

After the valve-seat has been inserted into the turning plug an interiorly-screw-threaded cap 17 is fitted to the exteriorly screwthreaded portion of the open end of the turning plug, which projects a suitable distance beyond the casing, and this cap bears against the flange end of the casing, so as to hold the turning plug in place. This cap is provided with a central opening 18, through which projects the outwardly-extending stem 19, carried by the closed end of the tubular valveseat, and the projecting end of this stem is provided with a suitable nut 20, which bears against the adjacent outer side of the cap 17.

From the foregoing description it will be apparent that water may pass through the inlet branch to and into the hollow turning plug, where it will elevate the check-valve 16 and pass outwardly through the outlet branch 3, and a return of the water will be prevented by a seating of the check-valve. Should it be desired to entirely out off the flow of water, the turning plug is operated to turn the plug into a position at substantially right angles to the normal, whereby the inlet and outlet branches will be closed, as best illustrated in Fig. 3 of the drawings.

In order that the interiorof the turning plug and the valve-casing may be drained when the stop-cock is closed, the lower edge of the inlet-waterway 7 is provided with a notch or recess 21, which is designed to be alined with a drain port or perforation 22, formed through the valve-casing, adjacent to the lower end thereof, and in a plane at substantially right angles to that of the inlet and outlet branches, as fully illustrated in Fig. 3 of the drawings. It will be understood that the tubular Valve-seat fits snugly within the plug and turns therewith, so that the interior of the plug and the valve-seat is normally in communication with the notch 21, and when the latter is alined with the perforation 22 the casing will be elfectually drained.

Should the turning plug become loose on account of wear, it may be readily tightened by operation of the nut 11 and the screw-cap 17, so as to force the tapered plug more tightly into the similarly-tapered bore of the casing. To provide for this longitudinal adjustment of the plug, the latter normally terminates short of the inner end wall of the cap 17, so as to permit of the plug being moved into the cap, as will be understood. It will now be apparent that the outer closed end of the tubular valve-seat is preferably flush with the adjacent end of the plug, so as to be spaced away from the cap 17 in order that it may move into the cap with the plug, and the purpose of the stem 19 and the nut 20 is to support the valve-seat and prevent accidental longitudinal movement thereof after the plug has been adjusted. Moreover, this stem also provides a convenient handle for applying and removing the valve-seat.

It is designed to have the tubular valve-seat 13 axially movable within the outer turning plug, so as to form an inner turning plug for controlling the inlet-port of the outer plug. By this arrangement the inner plug may be turned to close the inlet-port of the outer plug, so that communication is cut off between the inlet and outlet branches of the casing, even though the ports of the outer plug may be alined with the corresponding branches of the casing, whereby accidental or unauthorized opening of the valve is efiectually prevented.

From the foregoing description it will be apparent that the present invention has but few parts, which may be conveniently assembled and also removed for repairing and forany other purpose. Moreover, the checkvalve and the seat therefor may be conveniently removed without interfering with the other parts of the valve and without removing the entire casing from its connection with a pipe by simply closing the turning plug, so as to cut off the steam or water.

Although the present device has been described in connection with a steam-boiler, it will of course be understood that it may be applied with equal effect to other pipe-lines for conducting oil, gas, or air.

Having described the invention, I claim- 1. A valve, having inner and outer portcontrolling turning plugs, and a check-valve.

2. A valve, having an outer hollow turn ing plug provided with inlet and outlet ports, I

an inner turning plug to control one of the ports, and a cheek-valve located between the ports of the outer turning-plug.

3. A valve, having inner and outer port* controlling turning plugs, and a check-valve supported by one of the plugs.

4. A valve, having inner and outer portcontrolling turning plugs, of which the inner plug is removable without unseating the outer plug, and a check-valve supported by and re movable with the inner plug.

5. A valve, having an outer hollow turning plug, which is open at one end, and also provided with a port, an inner turning plug to be inserted through the open end of the outer plug, and controlling the port thereof, and a check-valve supported by the inner plug.

6. A valve, having an outer hollow turning plug, which is open at one end, and also provided with inlet and outlet ports, an inner hollow turning plug controlling one of the ports of the outer plug, and having inlet and outlet ports, and a check-valve controlling the outlet-port of the inner plug.

7. A valve, having an outer turning plug, which is hollow, and provided with an open end, and also having inlet and outlet ports, an inner hollow turning plug controlling one of the ports of the outer plug, and having a lateral inlet-port, and an open innerend formin g avalve-seat, and a check-valve supported thereon.

8. In a valve, a valve-casing, which is open at opposite ends, and also provided with inlet and outlet branches, a hollow turning plug, having one open end, a tubular valve-seat to be inserted into the hollow plug and through the adjacent open ends of the casing and the plug, the tubular valve-seat having an open inner end forming the valve-seat proper, and

also provided with an opening to be alined with the inlet branch, and a check-valve for the valve-seat.

9. In a valve, a casing, which is open at opposite ends, and also provided with inlet and outlet branches, a hollow turning plug, which is open at one end, and said open end also projecting beyond the casing, a valveseat to be inserted into the plug and through the open end thereof, and also having a stem projecting outwardly through the open end of the plug, a check-valve for the valve-seat, a screw-cap fitted to the projecting end of the plug, and bearing against the casing, and also having an opening for the reception of the stem, and a nut fitted to the projecting end of the stem, and bearing against the cap.

10. In a valve, a casing, having inlet and outlet branches, and a drain port or perforation located between said branches, a hollow turning plug, having inlet and outlet openings for alinement with the respective branches of the casing, and the inlet-opening having a notch formed in one edge thereof, and for alinement with the drain port or perforation, a hollow valve-seat located within the turning plug, and movable therewith, and also provided with an inlet-opening, normally alined with the inlet-opening of the plug, and a check-valve for the valve-seat.

In testimony that I claim the foregoing as my own I have hereto ailixed my signature in the presence of two Witnesses.

H. M. PINNEY.

Witnesses:

A. F. NIoHoLs, A. F. HAvENs. 

